In this Letter, we report our successful synthesis of a hybrid SL (HSL) of [(SrIrO\(_3\) )\(_1\) /(SrTiO\(_3\) )\(_1\) /(SrIrO\(_3\) )\(_2\) /(SrTiO\(_3\) )\(_1\) ] that is designed to combine the supercells in the single-layer SL of [(SrIrO\(_3\) )\(_1\) /(SrTiO\(_3\) )\(_1\) ] and the bilayer SL of [(SrIrO\(_3\)\()\)\(_2\) /(SrTiO\(_3\) )\(_1\) ] as shown in the Fig. 1(a). Such a hybrid structure can be considered as \(n = 1.5\)  member of the RP series that is analogue to Sr\(_5\) Ir\(_3\) O\(_{11}\)  but without the in-plane half-unit-cell slide between the monolayer and bilayer slabs [1]}. We found that the HSL shows an insulating ground state with a single AFM transition at 120 K which is lower than the single-layer SL (150 K) but similar to the bilayer SL [2]}, [3]}. On the other hand, the HSL show a significantly larger net canted moment than the bilayer SL. The resonant x-ray magnetic scattering (RXMS) measurement reveals that the AFM moments are not only predominantly in-plane in the monolayer slab but also stabilized in the bilayer slab. These results show that the HSL forces the monolayer and bilayer to merge electronically and magnetically to form a new rounded system that behaves distinctively.
